<script type="text/javascript">
	var obj = {
		name : "zhao",
		age : 18,
		height : 20
	}

	for(var prop in obj){
		console.log(prop + " " + typeof(prop));
	}

	for(var prop in obj){
		console.log(obj.prop)
	}

	for(var prop in obj){
		console.log(obj[prop])
	}

	console.log(name in obj);
	console.log("name" in obj);
</script>